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Finding the Fourth Proportional to 356,612.52, 492,175.76 and 220,690.35

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Solution

The fourth proportional to 356,612.52, 492,175.76 and 220,690.35 is: 304,583.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,612.52 : 492,175.76 = 220,690.35 : x
  2. Step 2: Convert to fraction form
    356,612.52/492,175.76 = 220,690.35/x
  3. Step 3: Cross multiply
    356,612.52x = 492,175.76 × 220,690.35
  4. Step 4: Simplify right side
    356,612.52x = 108,618,440,460.05
  5. Step 5: Solve for x
    x = 108,618,440,460.05/356,612.52
  6. Step 6: Final answer
    x = 304,583.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.